27778789822 has 24 divisors (see below), whose sum is σ = 48509152776. Its totient is φ = 11895862608.

The previous prime is 27778789813. The next prime is 27778789859. The reversal of 27778789822 is 22898787772.

It is a super-2 number, since 2×27778789822² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15268 + ... + 236200.

It is an arithmetic number, because the mean of its divisors is an integer number (2021214699).

Almost surely, 2^27778789822 is an apocalyptic number.

27778789822 is a deficient number, since it is larger than the sum of its proper divisors (20730362954).

27778789822 is a wasteful number, since it uses less digits than its factorization.

27778789822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222232 (or 222225 counting only the distinct ones).

The product of its digits is 88510464, while the sum is 67.

The spelling of 27778789822 in words is "twenty-seven billion, seven hundred seventy-eight million, seven hundred eighty-nine thousand, eight hundred twenty-two".